public void TestMallard()
{
Duck mallard = new MallardDuck();
Assert.AreEqual("Quack", mallard.quack());
Assert.AreEqual("I'm flying!", mallard.fly());
}
public static void RevisaoPOO1()
{
Duck duck = new Duck();
MallardDuck mallardDuck = new MallardDuck();
RubberDuck rubberDuck = new RubberDuck();
RedHeadDuck redHeadDuck = new RedHeadDuck();
duck.display();
duck.swim();
mallardDuck.display();
mallardDuck.quack();
mallardDuck.fly();
rubberDuck.display();
rubberDuck.quack();
redHeadDuck.display();
redHeadDuck.fly();
redHeadDuck.quack();
}